In the previous work [1]}, the authors evaluated the abundance of PBHs from first-order EWPT in the SMEFT.
Although large non-decoupling quantum effects of new particles in the fundamental model behind are important to realize strongly first-order EWPT, such effects may cause the SMEFT expansion to break down [2]}, [3]}.
In the present paper, we consider one of the realistic effective field theories, called the naHEFT [4]} and investigate the production of PBHs in the framework.
This effective field theory can parameterize the non-decoupling quantum effects of the new physics at the next to leading order, by which strongly first-order EWPT can be well described.
Therefore, the naHEFT is a useful framework to discuss the phenomena beyond the SM, such as the baryon asymmetry of the Universe.
We study the parameter region in the naHEFT where PBHs can be produced from first-order EWPT and its detectability in the future observations.
Complementarity of PBH observations, GW observations and collider experiments to probe the EWPT is also discussed.
